A cereal company is putting 1 of 3
box of cereal. The prizes are evenly distributed so the
probability of winning any given prize is always 1/3.
ness,
Adam wonders how many boxes he should expect to buy to get all 3 prizes. He carried out 32 trials of a
simulation and his results are shown below. Each dot represents how many boxes it took to get all 3 prizes
in that trial.
200.000 t
00000 T
00+
4 5 6 7 8 9 10 11 12 13
# of boxes purchased
probability that it takes 9 or more boxes to get all 3 prizes.
Use his results to
Give your answer as
e of
P(9 or more boxes)
